Cenozoic Sedimentary Sequence in the Kumkal Basin, Xinjiang and New Evidence for the Late Quaternary Uplift of the Qinghai-Tibetan Plateau

• 来源期刊: 大陆动力学（英文版）
• 学科: 地球科学
• 关键词: Cenozoic sedimentary sequence mammal fossils Qinghai-Tibet Plateau
• 年，卷（期）: 2001,（2）
• 页码范围: 67-72
• 页数: 6页
• 分类号: P5
• 语种: 英文

摘要

A continental sedimentary sequence of large thickness from Oligocene to Pleistocene is well developed in the Kumkal basin, Xinjiang, which recorded the process and scale of the uplift of the west part of the Qinghai-Tibetan Plateau. The main leveling plane was formed after Miocene but before Pliocene, a period featuring a change of biotic association from species like the ones in the present mountainous regions of South China to those suitable to salt-water environment. Geological data indicate that the scale of the uplift was fairly large and the horizontal movement was very strong in the western plateau. The features of mammal fossils in combination with the elevation of fossil beds and the characters of river erosion geomorphic features disclose that the uplift scale in this area is no inore than 500 m since the late Pleistocene.